Home / 280,252,643.80-420,378,965.70-163,548,200.20

Finding the Fourth Proportional to 280,252,643.80, 420,378,965.70 and 163,548,200.20

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Solution

The fourth proportional to 280,252,643.80, 420,378,965.70 and 163,548,200.20 is: 245,322,300.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,252,643.80 : 420,378,965.70 = 163,548,200.20 : x
  2. Step 2: Convert to fraction form
    280,252,643.80/420,378,965.70 = 163,548,200.20/x
  3. Step 3: Cross multiply
    280,252,643.80x = 420,378,965.70 × 163,548,200.20
  4. Step 4: Simplify right side
    280,252,643.80x = 68,752,223,242,172,528
  5. Step 5: Solve for x
    x = 68,752,223,242,172,528/280,252,643.80
  6. Step 6: Final answer
    x = 245,322,300.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.